For each resource type, the following bits are defined:

• One to indicate the usage of the resource is constrained
• One to indicate the usage is critical

If neither bit is set, the usage of the resource is considered normal. This allows CSM users to take action based on resource usage to prevent critical shortages that might jeopardize the application's or system's operation. Possible user actions might include selecting a different storage source for buffer pools or limiting usage of fixed storage. For information about other actions that an installation can consider to resolve resource shortages, see Monitoring CSM storage.

  LOC    SOURCE STATEMENT
000000 IVTSTATA DSECT                         CSM resource status area
000000 STATA_ACRO  DS    CL4                  Eyecatcher 'STAT'
000004 STATA_LEN   DS    XL2                  Number of bytes of resource
       *                                        statistics
000006 STATA_FLAG  DS    X                    Status flag
       STATA_ESTAT EQU   X'C0'                ECSA storage status
       STATA_ECRIT EQU   X'80'                ECSA storage critical
       STATA_ECONS EQU   X'40'                ECSA storage constrained
       *
       STATA_DSTAT EQU   X'30'                Data space storage status
       STATA_DCRIT EQU   X'20'                Data space storage
       *                                      critical
       STATA_DCONS EQU   X'10'                Data space storage
       *                                      constrained
       *
       STATA_FSTAT EQU   X'0C'                Fixed storage status
       STATA_FCRIT EQU   X'08'                Fixed storage critical
       STATA_FCONS EQU   X'04'                Fixed storage constrained
000007 STATA_FLAG2 DS    X                    Misc - Flags
       STATA_MONITOR EQU X'80'                CSM Monitor active